Fuel-regulator.



N. S. HARTER.

FUEL REGULATOR.

APPLICATION .FILED JAN-18,1915.

1 178, 1 55. Patented Apr. 4, 1916.

2 SHEETS-SHEET 1' N. S. HARTER.

FUEL REGULATOR.

APPLICATION FILED JAN. 18, 1915'.

Patented Apr. 4,1916.

2 SHEETS-SHEET 2 THE COLUMBIA PLANOGRAPN CO" WASHINGTON. D- C- NOAH S. HARTER, OF WAUKEGAN, ILLINOIS, ASSIGNOR TO THE HARTER COMPANY,

OF WAUKEGAN, ILLINOIS, A CORPORATION OF ILLINOIS FUEL-REGULATOR.

Specification of Letters Patent.

Patented Apr. 4, 1916.

Application filed January 18, 1915. Serial No. 2,817.

To all whom it may concern: Be it known that .I, NOAH S. HARTER, a

Y citizen of the United States, residing at "of Fig. 1.

Waukegan, in the county of Lake and State of' Illinois,'have invented certain new and useful Improvements in Fuel-Regulators, of which the. following is a specification.

My invention relates to improvements in fuel regulators whereby to automatically control the heat applied to cooking utensils.

One of the objects of my invention is to provide a separable heat-controlling devlce, that may beapplied to the ordinary gas stove and to any of the usual'containing vessels or utensils used for cooking, whereby to automatically control the temperature within such vessel, by varying the gas supply. Another-and more specific object ofmy invention is to provide a separable heatresponsive, fuel-controlling'device, provided with flexible gas conduits, or hose, that may be introduced between the nozzle and burner of an ordinary gasstove and so arranged that the responsive device, attached thereto, maybe placed near or withinthe vessel, within which food isbeing cooked.

Other and further objects of my invention will become apparent to persons skilled in the art, from a consideration of the following description when taken in conjunction with the drawings, wherein Figure 1 isa planview of a one burner gas stove with a cooking utensil thereon and my heat regulating device applied thereto. Fig. 2 is a central section taken on line 2-2 Fig. 3 is a transverse section taken on line 3-3 of Fig. 1. Fig. 4 is a section taken on line H of Fig 1. Fig. 5

is a section taken on line 5-5 of Fig. 3. Fig. 6 is a section taken on line 6-6 of Fig. 2. r i i In all the viewsthe same reference characters'are employed to indicate similar parts. In the single embodiment which I have chosen for" the purpose of exemplifying my invention, 10 is a gas burner, of the single burner type, provided with a burner 11 having a gas and air eduction pipe 12, the outer end or mixing'chamber 12 or which is normally supported upon the nOZZle 13, the inner end, or burner, being supported upon a cross bar '14. A. pipe 15 carries aneedle valve16 fromwhich-thenozzle 13 projects inwardly, provided with-a hand wheel 17. The pipe 15 is supported upon brackets 18 that project from the frame 19of the stove 10. One end of the pipe 15 is provided with a cap 20, the other end is provided with a nipple 21 for attachment to a hose for connection to a suitable gas supply. The foregoing description will apply generally to gas stoves of the usual or well known type.

The prime object of my invention is to apply a fuel controlling mechanism, responsive to the heat within the cooking utensil, for controlling or regulating the gas supplied to the burner, when the heat within the vessel has reached a predeter mined temperature or de ree.

22 is a cooking vessel or utensil having a cover 23 and a handle 24. Within this vessel, food is to be cooked.

The heat responsive device, or gas controller, is generally indicated by 25 and consists of a casing provided by the castings 26 and 28, securedtogether at their edges, as by screws. The casting 28 is provided witha gas inlet 27 to which is attached a hose 27'. A gas outlet 29 is also provided in said casting to which is attached the hose 29. The passage-way 27 communicates with a vertically disposed recess 31 which is open at its bottom'end, as at 32, and adapted to be'closed by a diaphragm 33 which shuts off the passage between the recess 31 and the passage way 27. The diaphragm 33 is secured around its circumferential edges in a recess in the casting 26 so that any heat applied to the diaphragm will tend to expand it and will cause it to close the aperture 32 of the recess 31, and thus close communication between the passage way 27 and the recess 31. When the diaphragm is relaxed, as shown in Fig. 3, there is an opening thereby provided between the end 32 of the recess 31, and gas will then pass from the passage way 27 into the recess 31, between the diaphragm 33 and the opening 32,

into the passage way 29, but when the diaphragm 33 is expanded, as by heat applied to the bottom of the device. as shown by the arrows in Fig. 3, it will expand to a greater or less extent, and to that extent or degree it will close the opening, thereby throttling or regulating'the gas supply that will pass from the hose 27 to the hose 29, through the regulator, as heretofore described. A screw 34 passes through the recess 31. into and through the wall 35 between said recess and the passage way 29. The clearance hole through the wall 35 is not threaded and therefore the gas that passes fro-m the pasgrooves provided by the screw-threads on the screw and the clearance hole into which the screw is projected, and the farther the screw is projected into the wall 35, to the extent of the thickness of the Wall, the longer will he the path and greater will be the resistance of the passage of the gas through this path and therefore a smaller amount of gas will pass into the hose 29. The gas, controlled by the screw 34, is adapted to permit a variable but determined quan tity of gas to always pass into the burner 11 without regard to the operation of the diaphragm, so thatat no time can the -dia-' phragm 33 so close the gas passage as to permit extinction of the flame at the burner. The casting 26, of the responsive device 25, is provided with a downwardly-projecting nubor stud 36 which is adapted to enter a hole 37 to bemade in the cover 23 of the'utensil 22. This hole is preferably some- 7 what larger than the projection 36 to permit steam or heat to pass up from the utensil past the projection 36 and into contact with the b rttom wall of the casting 26 thereby to heat the diaphragm to an extent determined by the heat within the utensil. The projec tion 36 also operates as a means for positioning and holding the responsive device 25 in proper position on the cover 23 to prevent its accidentaldisplacement Other means than that shown may be employed for holding the controllin device 25 in contact with any wall of tie cooking utensil 22,- within the contemplation of myinvention.

A convenient means for applying my device to an ordinary gas stove is to remove the mixing chamber 12f from the end of the nozzle 13, and provide a bracket 39 preferably secured to the stove, as to the pipe 15, bya screw 40, and rest the end 12' on this bracket. I thereafter place the end 41'0f the hose 27' upon the nozzle 13 of the stove" needle valve, and the nozzle 42 of the end 42 of the hose 29,- inside of the mixing chamber 12", which was formerly occupied'by the nozzle-13. It will now he observed that the gas must pass from the pipe 15 through the needle valve 16 into the hose 27, through the passage way 27, and between the diaphragm 33 and the recess 31 through the opening 32 and from thence through the passage-way 29, into the hose 29' and from thence into the mixing chamber 124 of the burner 11. t

The nozzle 42 is provided with a plurality of springs 43 that engage the walls of the orifice in the end of the mixing-chamber 2 ama in .fer, a a e ea' e s le 42' 7 claim is in place. To remove the nozzle it is only necessary to pull it out of the orifice in mixingchamber 12, when thesprings. 43

will yield and the outwardly bent'ends 44 of the springs will control the distance to which the nozzle 42 enters the mixing chamber.

The casting 28, of the device, is provided witha hand piece 44, and aperforation 45 by which the device may be handled orhung upon a'nail, or the like, out of the way when not in use. A knob 46, preferablyof mate rial which is not a good conductor of heat, such as word or thelike, is secured to the top ofthe device, by which it may behan-- remove the cover 23 of the vessel 22. i

While I have herein shown and described dled while in use, as when it is necessary to a single embodiment offmy invention for the purpose of clear disclosure, it is manifest that"considerable change in the general 7 7 formation and disposition of parts may be made within the scope of the appended claims. f

Having described 51. A device of thecharacter described for useiwith a gas stove and cooking utensil con1= prising a. portable heat-responsive? gas-controllerg -means comprising a thermal inducinvention, "what iv tor for supporting said controller on said utensil, over an aperture therein, and fiexi ble means for detachably connecting' ,said

device between the nozzle and burnerof said stove.

comprising a portable heat-responsive gas 2. A device of the character described for usewith a gas stove and a cooking utensil thermal conductor for entering a per-fora tion, in thetop ofsaid utensil, to hold it in place; a hose for connecting then'czzle'of said gas stove with said device and another hose to connect the; burner of said SliQVe Wlth said device.;- V 4 H r 3. A device of the character described'fo'r use with a gas stove. and a'cooking utensil comprising a portable heat-responsive gascontroller; means" thereon,, lcomprising' a thermal conductor for-entering a perforation in thetop of said utensil, to hold 'it in place; a hose for connecting ,thenozzle of said gas stove withsaid'devi'ce and another hose to connect the burnerfof said-stove" with f said device and'a supporting bracket fixed to saidstove to hold. theburner in place when removed from the stove nozzle. 7.;

comprising a portable heat-responsive gas controller, an expanslble yalve co'ntrolling chamb t re n e ..er9jeeti 2a ir n-5a wall 7 I Y 4. device of the character described, for .use with a gas stove and cookingfutensil of said chamber adapted to secure the con- In testimony whereof I hereunto set my troller in position on the cooking utensil and hand in the presence of two subscribing wittransmit heat to the said expansible chamnesses.

ber, a flexible conduit for supplying gas to NOAH S. HARTER. 5 the said controller and a second flexible con- In the presence ofduit between the controller and burner of FRANK P. TYLER,

the gas stove. ALVAH L. Rooms.

copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. 0. 

